Development of Micro-Dodecahedral Loudspeaker for Measuring Head-Related Transfer Functions in The Proximal region
Development of Micro-Dodecahedral Loudspeaker for Measuring Head-Related Transfer Functions in The Proximal region
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DOI：
10.1109/icassp.2006.1661279
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发表时间：
2006-05
期刊：
影响因子：
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通讯作者：
S. Hosoe;Takanori Nishino;K. Itou;K. Takeda
中科院分区：
文献类型：
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作者：
S. Hosoe;Takanori Nishino;K. Itou;K. Takeda
本文介绍了用于测量听者头部附近的头部相关传递函数 (HRTF) 的新设备。耳机中的 3D 声音是由声音信号和 HRTF 卷积生成的，HRTF 定义为点声源和耳道入口之间的声学传递函数。 HRTF 测量通常使用扬声器，扬声器与被摄体之间的距离大于 1 m。头部1m以内的区域称为“近端区域”，该区域需要小型扬声器来精确测量HRTF，即无法使用传统扬声器。在我们的研究中，使用具有 12 个压电陶瓷器件的微型十二面体扬声器进行直径为 38 mm 的 HRTF 测量。我们的实验检查了该扬声器的特性。从结果来看，我们开发的扬声器提供了与点源相似的性能，并且对于测量近端区域的 HRTF 非常有效
This paper describes new equipment for measuring head-related transfer functions (HRTFs) near a listener's head. 3D sounds in headphones are generated by the convolution of sound signals and an HRTF, which is defined as the acoustical transfer function between a point sound source and the entrance to the ear canal. A loudspeaker is usually used for HRTF measurements, and a distance of more than 1 m separates the loudspeaker and the subject. The region within 1 m of the head is called the 'proximal region,' where a small loudspeaker is needed for accurately measuring HRTF, that is, a conventional loudspeaker cannot be used. In our study, a micro-dodecahedral loudspeaker with twelve piezoelectric ceramic devices is used for HRTF measurements at a diameter is 38 mm. Our experiments examined the characteristics of this loudspeaker. From the results, our developed loudspeaker provides similar performance to a point source, and it is very effective for measuring the HRTFs in the proximal region